WO2016100287A1 - Coexistence de technologies d'accès radio utilisant la détection d'énergie adaptative - Google Patents

Coexistence de technologies d'accès radio utilisant la détection d'énergie adaptative Download PDF

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Publication number
WO2016100287A1
WO2016100287A1 PCT/US2015/065729 US2015065729W WO2016100287A1 WO 2016100287 A1 WO2016100287 A1 WO 2016100287A1 US 2015065729 W US2015065729 W US 2015065729W WO 2016100287 A1 WO2016100287 A1 WO 2016100287A1
Authority
WO
WIPO (PCT)
Prior art keywords
modem
energy level
rat
detected
message
Prior art date
Application number
PCT/US2015/065729
Other languages
English (en)
Inventor
Kiran Kumar SOMASUNDARAM
Durga Prasad Malladi
Tao Luo
Aleksandar Damnjanovic
Yongbin Wei
Qingsi Wang
Srinivas YERRAMALLI
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to JP2017531658A priority Critical patent/JP6419972B2/ja
Priority to CN201580067586.6A priority patent/CN107005357B/zh
Priority to EP15820011.3A priority patent/EP3235157B1/fr
Publication of WO2016100287A1 publication Critical patent/WO2016100287A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/16—Threshold monitoring
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • LTE modem 130 can include hardware such as circuitry, one or more processors, memory, and/or other means for processing LTE signals.
  • LTE modem 130 can be configured to process signals for LTE in unlicensed spectrum.
  • LTE modem 130 can include a receiver 132, a transmitter 134, and a filter 136.
  • LTE modem 130 can be configured to perform interference detection operations, such as, for example, energy detection operations to determine the interference level of a channel.
  • Wi-Fi transmitter 144 can be configured to generate a modulated Wi-Fi signal based on digital input, such as a MAC transport block.
  • Wi-Fi transmitter 144 can receive digital input from a protocol stack of the wireless device (e.g., a protocol stack included in access terminal 102 or access point 106).
  • transmitter 144 can receive digital input in the form of a demodulated received signal.
  • Transmitter 144 can receive the demodulated received signal from receiver 142.
  • Transmitter 144 can remodulate the demodulated received signal to generate a new Wi-Fi signal.
  • the new Wi-Fi signal can be used, for example, to configure a cancellation filter for improving a second RAT signal.
  • Wi-Fi transmitter 144 can be configured to send transmissions to other network entities operating based on or according to the first RAT.
  • the transmissions can be messages that include signatures (e.g., preambles) for the first RAT.
  • Wi-Fi modem 140 can receive an indication of LTE modem 130 planning to send an LTE transmission message, e.g., in the frequency or channel that may be shared between the modems.
  • Wi-Fi modem 140 can configure transmitter 144 to send a message (e.g., a channel usage or channel reservation message) to other devices operating based on or according to the first RAT preceding the LTE transmission in order to clear the channel for the LTE transmission message.
  • Filter 146 can include one or more digital filters configured to improve a signal quality of an incoming Wi-Fi signal.
  • filter 146 may be a space-time filter configured to reduce interference from a second RAT signal.
  • Space-time filter 146 can be configured based on a channel estimate provided by a second RAT receiver (here, LTE receiver 132).
  • Space-time filter 146 can be configured as an LTE nuller to null out one or more LTE streams.
  • filter 146 can be a cancellation filter.
  • a cancellation filter can be used to cancel a second RAT signal from the Wi-Fi signal.
  • the cancellation filter can be configured based on a second RAT signal generated by a first RAT transmitter such as the transmitter 144.
  • LTE modem 130 may be configured to adjust energy detection threshold 166 based on the received signal strength information 162 and/or header information 164.
  • energy detection threshold 166 may be a threshold having a value that indicates whether or not a frequency or channel is sufficiently clear of other transmissions, or noise, or interference, to allow LTE modem 130 to transmit on that frequency or channel (e.g., channel is clear if a detected amount of received energy does not meet the threshold).
  • Wi-Fi modem 140 or queuer 170 or LTE modem 130 may filter received signal strength information 162 such that only the received signal strength information 162 from Wi-Fi device transmissions are considered when adjusting energy detection threshold 166.
  • the filtering may be based on the header information 164, which allows for discerning between 802. xx preambles transmitted by Wi-Fi devices and LTE devices sending 802.xx preambles.
  • energy detection threshold 166 may be more specifically defined as a threshold having a value that indicates whether or not a frequency or channel is sufficiently clear of Wi-Fi device transmissions to allow LTE modem 130 to transmit on that frequency or channel (e.g., channel is clear if a detected amount of received energy does not meet the threshold).
  • LTE modem 130 may be configured to not defer transmissions in the presence of other LTE transmissions in the shared frequency or channel, as LTE-enabled devices and LTE transmissions are configured to allow for interference cancellation or to otherwise enable decoding of overlapping LTE transmissions.
  • the received signal strength information 162 and/or header information 164 for the one or more messages 160 may be associated with a same frequency or channel in which LTE modem 130 may transmit, e.g., in a shared frequency spectrum.
  • logical grouping 301 can include an electrical component 306 for determining the detected energy level value.
  • Electrical component 306 may comprise Wi-Fi modem 140 (FIGS. 1 A and IB).
  • a UE transmit processor 964 may receive and process data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de détection d'interférence utilisant la détection d'énergie adaptative dans un spectre sans licence. Le procédé peut comprendre un premier modem fonctionnant selon une première technologie d'accès radio (RAT), recevant un message d'une entité de réseau fonctionnant selon la première RAT. Le premier modem envoie une valeur de niveau d'énergie détecté à un deuxième modem qui utilise une deuxième RAT, la valeur de niveau d'énergie détecté étant basée au moins sur le niveau d'énergie mesuré du message reçu. Le deuxième modem ajuste un seuil de détection d'énergie en fonction de la valeur de niveau d'énergie détecté reçue du premier modem. Dans un aspect, le premier modem reçoit des messages d'une pluralité d'entités de réseau fonctionnant selon la première RAT, la valeur de niveau d'énergie détecté étant déterminée d'après les niveaux d'énergie mesurés de la pluralité de messages reçus.
PCT/US2015/065729 2014-12-15 2015-12-15 Coexistence de technologies d'accès radio utilisant la détection d'énergie adaptative WO2016100287A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2017531658A JP6419972B2 (ja) 2014-12-15 2015-12-15 適応型エネルギー検出を使用する無線アクセス技術の共存
CN201580067586.6A CN107005357B (zh) 2014-12-15 2015-12-15 使用自适应能量检测的无线接入技术共存
EP15820011.3A EP3235157B1 (fr) 2014-12-15 2015-12-15 Coexistence de technologies d'accès radio utilisant la détection d'énergie adaptative

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201462092129P 2014-12-15 2014-12-15
US62/092,129 2014-12-15
US14/968,563 US9787569B2 (en) 2014-12-15 2015-12-14 Radio access technology co-existence using adaptive energy detection
US14/968,563 2015-12-14

Publications (1)

Publication Number Publication Date
WO2016100287A1 true WO2016100287A1 (fr) 2016-06-23

Family

ID=56112249

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/065729 WO2016100287A1 (fr) 2014-12-15 2015-12-15 Coexistence de technologies d'accès radio utilisant la détection d'énergie adaptative

Country Status (5)

Country Link
US (1) US9787569B2 (fr)
EP (1) EP3235157B1 (fr)
JP (1) JP6419972B2 (fr)
CN (1) CN107005357B (fr)
WO (1) WO2016100287A1 (fr)

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CN106922013B (zh) * 2015-12-24 2020-04-21 华为技术有限公司 同频段双射频模块的无线接入点和降低信号干扰的方法
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CN112141169B (zh) * 2019-06-28 2022-03-15 比亚迪股份有限公司 校验方法、装置、存储介质、列车及电子设备
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Also Published As

Publication number Publication date
US20160173361A1 (en) 2016-06-16
EP3235157B1 (fr) 2019-09-04
CN107005357B (zh) 2020-04-10
JP2018506878A (ja) 2018-03-08
CN107005357A (zh) 2017-08-01
EP3235157A1 (fr) 2017-10-25
US9787569B2 (en) 2017-10-10
JP6419972B2 (ja) 2018-11-07

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